Hirotaka Sugawara (菅原 寛孝, Sugawara Hirotaka; born March 15, 1938) is a Japanese physicist, specializing in the theoretical study of particle physics. He is known for the "Lee-Sugawara relation" and "A Field Theory of Currents" aka "Sugawara Construction" of the energy-momentum tensor.
Source: “Hirotaka Sugawara”, English Wikipedia (CC BY-SA 4.0), excerpt